Danfoss FAN-Q Pressure Independent Control Valve (PICV) DN15–DN20 for Fan Coils
Danfoss FAN-Q Pressure Independent Control Valve (PICV) DN15–DN20 for Fan Coils
Danfoss FAN-Q is a compact pressure independent control valve (PICV) designed for fan coil units. Its built-in differential pressure controller keeps the differential pressure across the control valve constant, so the flow is limited automatically and no separate balancing valve, shut-off valve or straight pipe section is needed. It is designed for on/off control, works up to 4 bar differential pressure, can close against up to 10 bar, and its stuffing box can be replaced under pressure. Used with the TWA-Z NC thermal actuator.
Technical Specifications
| Specification | Value |
|---|---|
| Type | FAN-Q pressure independent control valve (PICV) |
| Valve size | DN15, DN20 |
| Nominal flow (Qnom) | DN15 HF 550 l/h · DN20 HF 850 l/h |
| Setting range | DN15: 1–7 · DN20: 1–7 and N |
| Min. differential pressure (Δpmin) | 35 kPa (HF) |
| Max. differential pressure (Δpmax) | 400 kPa |
| Pressure rating | PN 16 |
| Control characteristic | On/off |
| Leakage rate (with recommended actuator) | IEC 60534-4 class IV |
| Manual shut-off | ISO 5208 class A |
| Medium | Water and water mixtures in closed heating/cooling systems |
| Glycol | Ethylene and propylene glycol, up to 50% |
| Medium temperature | (−10) 2 … 120 °C |
| Stroke | 1.8 mm |
| Actuator connection | M30 × 1.5 |
| Recommended actuator | TWA-Z NC (230 V: 082F1248) |
| Body material | DZR brass (CW602N) |
| Membrane and O-rings | EPDM |
Order Codes
| Order Code | Size | Description | Packaging |
|---|---|---|---|
| 003Z9651 | DN15 (½”) | DN15 HF, female thread, 550 l/h | Single pack |
| 003Z9653 | DN20 (¾”) | DN20 HF, female thread, 850 l/h | Single pack |
| 003Z9601 | DN15 (½”) | DN15 HF, male thread G¾A, 550 l/h | Industrial pack, 36 pcs |
| 003Z9603 | DN20 (¾”) | DN20 HF, male thread G1A, 850 l/h | Industrial pack, 36 pcs |
Danfoss products are backed by Novus Energy; for product selection, projects and bulk orders, engineering support is available via WhatsApp or phone. Technical values are compiled from manufacturer data; refer to the product datasheet for final selection.